Fourdrinier paper machine



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FOURDRINIER PAPER MACHINE 2 Sheets-Sheet l Filed Feb. 25, 1928 /Illlll Aug. 19, 1930. Y H. L. KUTTER 1,773,270

FOURDRINIER PAPER MACHINE Filed Feb. 2s, 1928 zrsneets-sheet 2 Pamesa" Aeg, '119.1930'. 4 1

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: invention relates to a paper machine Y andv more particularly to t e construction of the Fourdrinier section of a paper machine. Heretofore, it has been general practice to onstruct the Fourdripier sectioib 1or ab orming art, asasng e unit cap e o ing elevaxed at the breast roll end,or more recently, at the couch roll end, to vary the pitch of the wire.- Owing to vating the Fourdrinier section rom one end makes it necessary to use heavy side beams, usually I beams or d p channel beams, in the construction of the f pporting frame.

to provide a lighter supporti structure formed of tubular beams and furt er to provide a sup orting frame formed in hinged sections and adapted to be elevated at its intermediate hinged ploints, thus avoiding the necessity of ulullg rra.

@ther andfurther important objectso this invention will be apparent from' the disclosures in the specification and the accom- 'lfhis invention gin a preferred form) is illustrated in the rawings and hereinafter more fully described.

@n the drawings:

Figure l isa front side dia ammatical elevationalmview of a Fourdrimer structure embodying the principles of this invention;

fre .2 is an enlar ed broken sectional .view taken on line ll I of Figure l with parts in elevation;

Fi re 3 is a sectional view taken on yline II- H 01E Figure 2 with parts dotted to show the operation Figure 4; is an enlarged fragmentary front lelevational view; and

Fi ure o is a sectional view taken on line "V- of Figure 4.

v the great length 4 vof modern Fourdriniers, lthis practice of ele- The present invention has for its object eavier structural mate.

' i through a gear 22 ggg-Tgp STATES i will OI'EAmTOILOIQQABIdIOn'rQm fliwom" 'or y aconrona'rronorwnoom 1 usual table rolls 5 and'a suction box section l B having tubular'side beams G-for supporting the usual suctionboxes 7. Said sections A. and'B are hingedly connected, as at 8, b means of pivot pins 9 extending through a utting attened forked ends 10 and 11 fornicd u n the tubular side beams 4 and 6, respectively, Figure 2). Said pivot ins 9 are supporte gy jack screws 12 an 13 which are provid with iiattened heads 14 'and 15 respectively, for receiving the forked ends 11., Y

Said jackv screws 12 and 13` are mounted in front pedestal 16 and a' rear sleeve casting 17, respectively, the front pedestal 16 bein provided with a-orwardly and rearwar iy e'xtending'hollow base which are mounted toothed W eels 19 for engagement with grooved tracks 20. One of said toothed wheeis 19 is adapted to be driven from a sprocket gear 23 mounted on a power driven shaft 24. Both theront pedestal 16 and the rear sieeve casting 17 are provided with rollers 25 adapted to rest upon and roil over elevated tracks 26. stationary rear support 27 is providedwith lower spaced Arollers 28 upon which said tracks 26 are ers 29 adapted to bear against the .upper anges of said tracks 26. "lhe forward ends of said tracks 26 are adapted, in normal po'- sition, to rest in grooves 38 lig'ure Si formed in a stationary :iront pedestaib 3l. -Said pedestal 31 is cut away as at 32 to permit the extended base portion 18 to pass inside of the pedestai Si. rearwardly spaced support 32l1aving roilers 33 mounted thereon 1s adapted *to-support the 'tracks 26 in rearwardly extended position.

The breast roll is pivoted as at 2 upon pedestals 34: adapted to roll frontwise of the machine, as more clearl disclosed in my copending ap lica- `tion, erial No. l26,544, which was file Ausus granted Sept. 24, i929.

In a similar manner, a pair of edestals 35 supports the couch roll end of t e frame section B for pivotal movement about the rt-ion 18 in adapted to rest and upper rolend of the frame section s ous rollers in a new wire. The Fourdrinier structure 1 is 2o similar tracks (not shown) then moved out as a unit, the pedestals 34, 16 and 35 bearing the greater Fart of the weight and the rear side of the ourdrinier structure 4 rolling out over the tracks 26 and associated with the destals 34 and 35 respectively. Said .tracsa are, then withdrawn rearwardly to rest upon the rollers 33 of the pedestal 32 and similar rollers (not shown) for the tracks '25 39 and 40.

Abutments 41 are formed on the edestals 16,' 34 and 35 to support the rear si e of the ward position.

of the jack screws 12 and A in pitch Fourdrinier structure 1 in laterally removed position when the tracks are in their rearin place, the tracks movedintc lace .an

the Fourdrinier structure rolled ack into ,its normal sition again.

The mec anism for adjusting the height of the wire includes gears 42 and 43,'respectively, adapted to engage with worms 40 formed ona transverse bar 44. Said bar 44 may be manually rotated b theapplication of a crank (not shown) toits forwardly extended end 39.

12 and 13, the frame sections A andB are elevated at their pivotall connected ends as shown.in dotted lines in igure 3. Since the ivot 2 near the breast roll end -of the our rinier is fixed, the amount of variation of the wire and table roll section A isregulated solelyb screws 12 and 1'3. e pitch of the wire as it passes overvthe suction boxes 7 is not so treme] important since the web has already been practical y formed before reaching the suction boxes. The pitch ofthe wire over the table rolls 5, however is eximportant in the obtaining of a well forme sheet and it should pitch can be more easily eater variation in pitch justment of the jack screws adjusted and a eo 1f the Fourdrinier structure were4 elevated at one of its extreme ends.

In additionto this advantage of jllltment of the pitch, the a easy adhas a further advantage of being relatively lighter than usual structures owing to 34 and 35 to operate the varia The new wire is then strung 13 to vary the pitch By raising thejack screws l operation of said jack be noted that the the fact that tubular beams and tie rods are used in lace of the customary I-beams or channel cams.

I am aware that many changes may be made and numerous details of construction ma be varied throu h a wide range without departing from t e principles of this invention, and I, therefore do not purpose limiting the patent granted hereon otherwise than necessitated by the prior art.`

I claim as my invention:

1. In a removable type Fourdrinier aper machine, a frame formed in-two hinge sections for, supporting table rolls and suction devices respectively, means for adjusting the height of said frame at its hinged oints and means for laterally removing sai frame as a unit. l

2. In a removable type fourdrinier, a sectional supporting frame carrying the table rolls and suction boxes, the respective sections being pivotally connected to each other, means pivotally supporting the extremities ofl said frame, means for laterally removin said supporting frame as a unit and vertice ly adjustable screws su porting the pivotal connections between sai sections.

3. In a Fourdrinier aper machine, a suporting structure inclu ng end and intermeiate pedestals, alined si e beams vpivotall Amounted at their outer endsto said pedes and provided with inner abutting ends, elevating means `associated with said intermediate pedestalsv and common means pivotally connecting said inner abutting ends to said elevating means.

In testimony whereof I have hereunto subscribed my name.

HERMAN L.

of aper on the wire obtained by ady 12 1315118.11

above construction lll. 

